About This Place
Walnut Grove is a census-designated place (CDP) in Sacramento County, California, United States. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. The population was 1,542 at the 2010 census, up from 669 at the 2000 census.
Walnut Grove is located at 38°14′37″N 121°30′44″W / 38.24361°N 121.51222°W / 38.24361; -121.51222 (38.243490, -121.512100).
According to the United States Census Bureau, the CDP has a total area of 10.9 square miles (28.3 km²), of which, 10.2 square miles (26.4 km²) of it is land and 0.7 square miles (1.9 km²) of it (6.62%) is water.